Patentable/Patents/US-10287503
US-10287503

Enhanced brightness eWriter device

PublishedMay 14, 2019
Assigneenot available in USPTO data we have
Inventorsnot available in USPTO data we have
Technical Abstract

An enhanced brightness cholesteric liquid crystal eWriter device for writing and drawing includes substrates and electrically conductive layers disposed on the substrates. There is a gap, d, between the electrically conductive layers. Polymer dispersed cholesteric liquid crystal material is disposed in the gap. The polymer dispersed cholesteric liquid crystal material exhibits a written reflectance, R, which occurs in response to pressure applied to one of the substrates that changes reflectance of the cholesteric liquid crystal material. The device follows the relationship Rd1<Rd2 and d1>d2, where Rd2 is a written reflectance of an eWriter device of gap d2 and Rd1 is written reflectance of another eWriter device of gap d1. Further, a cholesteric liquid crystal eWriter device includes a layer of cholesteric liquid crystal material in a cell gap, d, wherein d<3 μm. Also included is an enhanced brightness eWriter with other features and a method of constructing an enhanced brightness, cholesteric liquid crystal eWriter.

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Patent Metadata

Filing Date

May 20, 2016

Publication Date

May 14, 2019

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